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Debian-Pi-Aarch64
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CONFIG_CPU_SPECTRE ?

[ TIME ] Timed out waiting for device dev-ttyS0.device. [DEPEND] Dependency failed for Serial Getty on ttyS0.

A start job is running for dev-ttyS0.device

[ TIME ] Timed out waiting for device dev-ttyS0.device.
[DEPEND] Dependency failed for Serial Getty on ttyS0.

/lib/systemd/system/serial-getty@.service

Steps

1. First copy the template:

# cp /usr/lib/systemd/system/serial-getty@.service /etc/systemd/system/serial-getty@ttyS0.service

2. Then edit the file and modify the agetty line:

[Service]
ExecStart=-/sbin/agetty --keep-baud 115200,38400,9600 %I $TERM    <-- Change this parameter
Type=idle

3. Create a symlink:

# ln -s /etc/systemd/system/serial-getty@ttyS0.service /etc/systemd/system/getty.target.wants/

4. Reload the daemon and start the service:

# systemctl daemon-reload
# systemctl start serial-getty@ttyS0.service
# systemctl enable serial-getty@ttyS0.service

NoTe

for docker (riscv)

apt install -y conntrack ebtables ethtool iptables libip6tc2 libnetfilter-conntrack3 libnfnetlink0 libyajl-dev libyajl2 socat

maybe: update-alternatives --set iptables /usr/sbin/iptables-legacy

Debian ports for RISCV repo

deb http://ftp.ports.debian.org/debian-ports/ sid main
deb http://ftp.ports.debian.org/debian-ports/ unreleased main

deb https://mirrors.cloud.tencent.com/debian-ports/ sid main
deb https://mirrors.cloud.tencent.com/debian-ports/ unreleased main

deb https://mirrors.aliyun.com/debian-ports/ sid main
deb https://mirrors.aliyun.com/debian-ports/ unreleased main

#deb https://mirrors.aliyun.com/thead/debian-riscv64/ sid main

for thead need:
apt install gnupg2
wget https://mirrors.aliyun.com/thead/thead-keys/thead-repo.gpg
apt-key add ./thead-repo.gpg
rm -rf ./thead-repo.gpg

check:
apt-key list | grep 'F164 B941 4332 FC54'

vscode linux arm64

https://aka.ms/linux-arm64-deb

unixbench

UB_GCC_OPTIONS='-O3 -fomit-frame-pointer -fforce-addr -ffast-math -Wall -march=armv8-a -mtune=cortex-a72'
make
  • stop system service not used
  • Run script in /dev/shm
cat /sys/block/sda/queue/scheduler
echo xxx > /sys/block/sda/queue/scheduler